塊
カイ, ケ, かたまり, つちくれ

clod, lump, chunk, clot, mass

JLPT1 G7 S13 F1800

As per 鬼# (large and lumpy) + 土 earth → large *lump/clod* of earth (compare 圣 as described in 怪, as well as 顆) → *cluster*; *group*.

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